The use of the product of K-MG ores processing as a complex ameliorant on sod-podzolic heavy loam soil in the Urals

Abstract

The paper presents the results of studying the product of high-temperature roasting of potassiummagnesium ores processing waste (cinder) as a complex ameliorant to increase the yield and quality of the Gornyak potato variety, as well as the fertility of sod-podzolic heavy loam soil. The research was carried out at Perm Agricultural Research Institute in 2020–2022. The aftereffect of the cinder use for potatoes increased its yield by 3,88 t/ha, the effect in conjunction with the use of full mineral fertilizer N60P60K90 – by 9,64 t/ha. However, relative to the mineral fertilizer, the increase is less than LSD 05 (0,81 t/ha versus LSD 05 1,23 t/ha). There is a tendency to reduce the negative impact of mineral fertilizers on the content of dry matter and starch in potato tubers when used together with cinder. The use of a complex ameliorant improved the acid-base properties of sod-podzolic soil, but to a lesser extent compared with lime. Due to the inclusion of phosphate rock to the cinder composition, the accumulation of mobile phosphorus in the soil was noted, an increase in the content of mobile potassium was not detected.